EP 3098627 A1 20161130 - METHOD AND DEVICE FOR CAPTURING AN IMAGE OF A TARGET OBJECT
Title (en)
METHOD AND DEVICE FOR CAPTURING AN IMAGE OF A TARGET OBJECT
Title (de)
VERFAHREN UND VORRICHTUNG ZUR BILDERFASSUNG EINES ZIELOBJEKTS
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR CAPTURER UNE IMAGE D'UN OBJET CIBLE
Publication
Application
Priority
DE 102015006798 A 20150527
Abstract (en)
A method for capturing the image of a target object (Z) illuminated by an illumination laser (1) includes the following steps: a) Illuminating the target object (Z) by means of a pulsed laser beam (L) emitted by the illumination laser (1), which beam is aimed at the target object (Z) in the form of an illumination (L 2 ) beam by an illumination optics unit (2); b) Receiving the illumination beam laser light reflected from the target object (Z) by means of a receiving optics unit (3); c) Directing the received reflected illumination beam laser light to an image capturing device (4) to generate an image of the target object on the image capturing device (4); d) Detecting the angular offset of the image of the target object with respect to a reference axis of the receiving optics unit (3); e) Stabilising the visual axis of the image capturing device (4) detected by imaging of the target object device by means of a first optical correcting element (30) of the receiving optics unit (3) that compensates for the angular offset; wherein the following additional steps are carried out to stabilise the imaging of the target object: a' 1 ) Decoupling a partial beam (L 1 ) from the laser beam (L) emitted by the illumination laser (1); a' 2 ) Delaying the decoupled partial beam (L 1 ) in an optical delay device (62); a' 3 ) Illuminating the target object (Z) by means of the partial beam (L 1 ) that is directed at the target object (Z) by the receiving optics unit (3); b' 1 ) Receiving the partial beam laser light which is reflected by the target object (Z) and which defines a reference wavefront by the receiving optics unit (3); b' 2 ) Decoupling the received reflected partial beam laser light from the light that is received by the receiving optics unit (3); c') Directing the decoupled reflected partial beam laser light to a wavefront sensor (50); d') Detecting a wavefront error in the received reflected partial beam laser light, and e') Fine tuning the receiving optics unit to compensate for the detected wavefront error by means of a second optical correcting element (32) of the receiving optics unit (3).
IPC 8 full level
G01S 17/66 (2006.01); G01S 17/18 (2020.01); G01S 17/89 (2020.01); F41H 13/00 (2006.01)
CPC (source: EP US)
G01S 17/18 (2020.01 - EP US); G01S 17/66 (2013.01 - EP US); G01S 17/89 (2013.01 - EP US); G02B 27/644 (2013.01 - US); G02F 1/0311 (2013.01 - EP US); H04N 23/56 (2023.01 - US); F41H 13/005 (2013.01 - EP US)
Citation (search report)
- [A] US 8218589 B1 20120710 - SAUNDERS PATRICK [US]
- [A] US 2006022115 A1 20060202 - BYREN ROBERT W [US]
- [A] ROCKWELL D A ET AL: "Real-time atmospheric compensation using stimulated Brillouin scattering phase conjugation", LASERS AND ELECTRO-OPTICS SOCIETY ANNUAL MEETING, 1993. LEOS '93 CONFE RENCE PROCEEDINGS. IEEE SAN JOSE, CA, USA 15-18 NOV. 1993, NEW YORK, NY, USA,IEEE, 15 November 1993 (1993-11-15), pages 98 - 99, XP010129281, ISBN: 978-0-7803-1263-0, DOI: 10.1109/LEOS.1993.379113
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3098627 A1 20161130; DE 102015006798 A1 20161201; DE 102015006798 B4 20180809; IL 245867 A0 20161130; IL 245867 B 20200331; SG 10201604240S A 20161229; US 10459242 B2 20191029; US 2016349529 A1 20161201
DOCDB simple family (application)
EP 16171024 A 20160524; DE 102015006798 A 20150527; IL 24586716 A 20160526; SG 10201604240S A 20160525; US 201615165886 A 20160526